botanically arranged. 417 



Scammony, Dr. Withering says, is the inspissated juice of a 

 species of Convolvulus so much resembling this, that they are 

 with difficulty distinguished. Can it then, says he, be worth 

 while to import Scammony from Aleppo, at a considerable an- 

 nual expence, when a medicine, with the very same properties, 

 grows spontaneously in many of our hedges ? If the prepa- 

 ration of Scammony would be a saving to England, it must 

 certainly be a much greater to America, in proportion to the 

 quantity used. Besides, as the imported Scammony is often very 

 impure, and as there is so much difference in the purgative vir- 

 tue of some masses of it, and that of others, that it is seldom 

 to be depended upon alone in extemporaneous practice, might 

 it not be preparied here much purer, and be more uniform in 

 its virtue? Notwithstanding the roots of the Convolvulus is 

 a very acrid purgative to the human race, hogs will eat it in 

 large quantities without any ill effects. 



IPOMOEA. Linn. Gen. Plant. 199. 



Ipomoea foliis cordatis integerrimis glabris laconosis, peduncu- 

 lis bifloris. Syst. Nat. 



AMERICAN JASMINE. Leaves stand opposite. Blossoms 

 yellow, tinged with red. Among hazel bushes. Very rare. 

 July. 



AMERICAN TEA. The calix a very small permanent rim, 

 surrounding the receptacle ; scarcely visible. Corolla one pe- 

 tal ; tubular. Limb divided into five acuminated segments ; 

 rolled inward. Nedaria five hooded petals, with long, fili- 

 form claws, inserted into the corolla below the sinuses of the 

 segments ; erect ; longer than 'the segments of the corolla. 

 Stamina five subulated filaments standing upon the corolla just 



E e e below 



